Design of planar matching loads for traveling-wave-fed SIW slot arrays

[摘要] This paper presents a novel planar matching load for traveling-wave-fed substrate integrated waveguide (SIW) slot arrays. The load consists of a planar grounded coplanar waveguide (GCPW) matching load and a planar GCPW to SIW transition which makes the GCPW matching load compatible with the SIW. In the GCPW matching load a high frequency resistor is used to dissipate the remaining power. A traveling-wave-fed SIW slot array with the novel load is designed, fabricated and measured. The measurement results show the proposed planar matching load performs well over a wide band 24.2–26.0 GHz, and reflection coefficient and side lobe level (SLL) of the array is significantly reduced comparing with the array with no load.

[学科分类] 电子、光学、磁材料

[关键词] matching load;traveling-wave-fed;SIW slot array;SIW